hutchins



(No unam" 2 sheets-sheen 1.

G. F. HU'I'GHIIIS. K WARP BEAM FOR LOGMS.

No. 548,442. Patentedct. 22,1895.

(No Model.) 2 Sheets-Sheet 2.

G. I'. HUTGHINS.

WAR? BEAM FOR LOOMS. No. 548,442. Patented Oct. 22,1895.

linirrnn STATES Parenti GEORGE F. HTGHINS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE KNOWLES LOOM WORKS, OF SAME PLACE.

WARP-BEAM FOR LOONIS.

SPECIFICATION forming part of Letters Patent No. 548,442, dated October 22, 1895.

Application iiled April 10, 1895. Serial No. 545,125- (No model.)

To @ZZ wiz/0m it may concern:

Be it known that I, GEORGE F. HUTCHINS, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Warp-Beams for Looms, of which the following is a speciication.

My invention relates to warp-beams for looms; and the object of my invention is to provide a warp-beam made entirely of metal and adapted to be used on looms on which are woven very heavy material, such as heavy duck cloth, 85e., which cause a severe strain on the warp-beam.

My invention consists in certain novel features of construction of my improved warpbeam, as will be hereinafter fully described, and the nature thereof indicated by the claim.

Referring to the drawings, Figure l is a sectional elevation of my improved warpbeam, and Fig. 2 is a cross-section taken on line 2 2, Fig. l, looking in the direction of arrow a, same figure.

In the accompanying drawings, l is the warp-beam body, made of iron pipe, preferably ve or six linches in diameter; but the size of the pipe may be varied, according to the length ot' the beam and the strain to be put upon it.

One end of the pipe or beam l is provided with an external right-hand screw-thread 1 thereon, and the other end with an external left-hand screw-thread 1.'

One of the outside beam-heads, as 2, has the central portion or hub 2 thereof recessed or cored out to form a chamber, which is provided With an internal right hand screwthread, and said beam-head 2 is screwed onto the right-hand screw-threaded end l of the pipe l until the end of the pipe butts against the end of the chamber in the hub, as shown. The other outside beam-head, as 3, has the central portion or hub 3' thereof recessed or cored out to form a chamber which is provided with an internal left-hand screw-thread, andA said beam-head 3 is screwed onto the left-hand screwthreaded end l of the pipe 1 until the end of the pipe butts 'against the end of the chamber in the hub, as shown.

Both beam-heads 2 and 3 are secured on the ends of the beam l and prevented from turning off in this instance by bolts or screws ,which extend through holes in the hubs of said heads and are tapped into the ends of the beam 1, as shown in Fig. l.

The peripheries of the outside beam-heads 2 and 3 are in this instance provided with teeth 2" and 3",which mesh into let-od pinions (not shown) in the ordinary way.

A central shaft 5 extends through the beam 1 and the ends thereof extend beyond the hubs of the outside beam-heads 2 and, as shown in Fig. l, to act as journals for the Warp-beam. A bolt 6, tapped into the hub of one of the outside beam-heads, as 2, secures the shaft 5 in place.

Mounted upon the beam 1,between the outside beam-heads 2 and 3, are the inside beamheads 7 and 8, the hubs 7 and 8 of which are internally screw-threaded and adapted to turn on the screw-threads on the ends of the beam l to adj ust the distance between the inner ends 7 and 8, as desired.

In order to hold the beam-heads 7 and 8 in their adjusted positions and prevent them from turning on thebeam l, I employ in this instance a key 9 for each beam-head. The key is adapted to slide in a longtudinal external groove 10, made in the beam l, and to enter a corresponding groove in the hub of the inner beam-head, as shown in Fig. 2.

The advantages ofv my improved beam-head will be readily appreciated by those skilled in the art.

By providingthe pipe or beam l with a righthand screw-thread on one end and a lefthand screw-thread on the other end, and screwing on the outside beam-heads, as above described, until the ends of the pipe l butt against the ends of the chambers or recesses in the hubs, and arranging the warp-beam on the loom so that the strain of the warp on the pipe or beam l as the outside beam-heads are held by the let-off pinions will tend to turn the pipe 1 to screw the threaded ends thereof into the threaded hubs of said beam-heads, itwill be seen that by reason of the beam-heads being already screwed up to butt against the ends of the pipe 1 any revolution of the pipe or beam 1 by the strain of the warp independently of the revolution of the outside ICO beam-heads is absolutely prevented, no matter how great a strain there is on the Werp.

This is an important feature of'myimproved f Warp-bearn.

The details of construction of my Warp'- beam may be varied, if desired. Forinstence, the central shaft need not extend through the beam l; but two short journals may be Secured in the hubs of theoutside beam-heads 2 and 3, if preferred. Y

Having thus described my invention, what I claim es new, anddesire to secure by Letters x In a Warp ybeam for looms, 860 the combination with a metal pipe or cylinder forming the body of the beam, and provided with a longitudinali groove and aright hand screw thread on one end, and e left hand screw thread on the other end,ot` two outside beam' heads, eachr having the central portion thereof recessed or cored out to form eehamher, which ,isprovided with an internairserew thread and a, key fitting within the 'longitudinalL groove ofthe oylinderrand in the recess of each huo, substantially es set forth.

, GEORGE F, HUTCHINS. f

Witnesses:

JOHN G. DEWEY,

M; J. GALVIN. 

